Building construction



June 12, 1928. 1,673,760

R. 0. SMITH BUILDING CONSTRUCTION File Dec. 1923 1 N V ENTOR.

By Ed A TTORNE Y.

Patented June 12, 1928.

UNITED STATES PATENT OFFICE.

ROBERT 0. SMITH, OF CHICAGO, ILLINOIS.

BUILDING CONSTRUCTION.

Application filed December This invention relates to concrete sections adapted to form parts of walls, floors and roofs of buildings which are waterproof and which are provided with fines or passa eways and with reinforcing material of metal) which are adapted to be joined in the manner hereinafter described to form integral walls, floors and roofs of fire-proof concrete buildings.

Among the objects of the invention is to obtain concrete sections which, when placed in suitable positions to form elements of a building, may be joined together to form a rigid and substantially integral and fireproof structure of concrete.

The invention is illustrated in the accompanying drawings, in which:

Figure 1 is a horizontal section of a corner of a building showing the manner of joining the sections.

Figure 2 is a partial vertical section of a wall showing the connection of the floor sections therewith.

The concrete slab or section, which is molded with vertically extending openings and intervening bridge walls, has embedded reinforcing metal rods 17 and 17, cross rods 18 and 18" and upright rods 19 and 19 the ends of the rods 17 and 17 resting in grooves provided therefor in facing strips 7 at the respective ends of the section. The reinforce rods 18 and 18 are provided transverse the ends or meeting faces of the respective sections and are in right angled form eX- tending tln'ough the meeting faces of the sections.

The vertical channels in the respective sections are of material area as compared with the section PI'OPQI', leaving narrow intervening bridge walls and side walls. Separators 23, which may be a heavy coat of tar or a thin strip of properly prepared wood, extend through the bridge walls between the vertical channels.

In arranging the sections to provide the corner of a building, the sections are disposed with one overlying the end of the other, and the sections in their abutting faces are formed with depressions 30 which, when the sections are assembled as indicated, register to provide a rectangular opening throughout the height of the sections. The right angled portions of the reinforce rods 18 extend into these vertically arranged recesses or channels 30. WVhen the sections are assembled, these registering channels are 5, 1923. Serial No. 678,675.

provided with a cement filling which, when set, provides a uniting block projecting into the meeting faces of the respective concrete sections and embedding the metallic reinforce of each concrete section, that is embedding the right angled portions of the reinforce rods 18.

The meeting face of each concrete slab or section beyond the channels 30 is formed with a narrow channel adjacent each side wall provided by the facing strips 7 and 8 which, after serving to hold the reinforcing bars 17, 17 and 18 in position during the molding of the slab section, are removed. These channels, which are comparatively narrow, register in the meeting faces of the slabs and of course the reinforcing rods 17, 17 and 18 extend terminally into these channels. As the slabs are assembled, these channels are filled with cement to form a uniting element between the slab sections and at the same time embrace and embed the projecting portions of the reinforce rods 17, 17 and 18.

In applying floors to a building, the walls of which are constructed as described, the floor sections, which are concrete slabs formed in a manner similar to that described in connection with the wall forming slabs, are supported upon the appropriate wall forming slab which has been cut away to provide shoulders 35 to receive the floor, the lower surface 31 of which rests directly on the lower slab and the upper surface 32 of which is directly ongaged by the overlying wall section or slab. A particular. feature of this arrangement is that the floor slab extends only partially throughout the width of the wall slab on which it rests, so that the air space formed vertically of the concrete slabs of the wall is not completely interrupted by the floor section. If desired, the lower inner edge of the shoulder 85 may be recessed at 38 to receive grouting to insure a close juncture between the floor slab and wall section adjacent the inner edge of the wall section.

I claim:

1. A wall made up of abutting concrete slabs, each formed in its abutting face with a recess extending throughout the length of said face, and further formed beyond such recess with a comparatively narrow channel extending longitudinally of the face in substantial parallelism with and on each side of the recess, a metallic reinforce for each tending air channels adapted to register when the slabs are arranged in wall formingpositions, and a floor section resting uponthe upper-endof one of the slabs and fitting within a recessed portion of the superimposed slab, the floor overlying the supporting slab for a distance substantially onehalf its thickness, whereby the floor section is prevented from completely-closingthe Vertical air channels of either the supporting or superimposed -slab, to thereby avoid interrupting-the continuity of the air space vertically of the wall.

ROBERT 0. SMITH. 

